UDP Messaging causes extra network traffic on some network setups

UE - Networking - Oct 7, 2015

A few users are experiencing strange network traffic from UDP Messagine. They notice it on other devices connected to the network. In some setups, it can even cause you to have cable TV interrupti ...

Lightmass: Blocky lightmap artifacts appears on the Mesh Actor which is shadowing by a single face mesh

UE - Graphics Features - Lumen - Jun 9, 2020

Begin Map Begin Level Begin Actor Class=/Script/Engine.StaticMeshActor Name=Plane_2 Archetype=/Script/Engine.StaticMeshActor'/Script/Engine.Default__StaticMeshActor' Begin Object Class=/Script/En ...

Renamed Enums displayed in Standalone game will show the original default name instead

UE - Gameplay - Blueprint - Mar 18, 2015

Renamed Enums displayed in Standalone game will show the original default name instead. ...

Setting a parent and child static mesh scale to negative effects the rotation on child when Snapped To Floor

UE - Gameplay - Jul 21, 2016

Setting a parent and child static mesh scale to negative effects the rotation on child when Snapped To Floor Looks to be directly related to this JIRA: https://jira.ol.epicgames.net/browse/UE-3152 ...

Grass shadows in BlueprintOffice are very dark on mobile

Docs - Samples - Aug 16, 2016

Grass shadows are very dark in BlueprintOffice on tvOS. It looks the same in Mobile Preview in the editor Assigning as Samples - Content based on the response to https://jira.ol.epicgames.net/brow ...

Child Actor does not get BeginPlay if SetClass used inside Parent's BeginPlay

UE - Gameplay - Jan 20, 2017

Per https://udn.unrealengine.com/questions/332025/childactorcomponents-spawned-actor-doesnt-get-begi.html If SetClass is used to set up a ChildActor as part of BeginPlay, that ChildActor does not g ...

Static mesh LODs other than LOD0 cannot be set to screen sizes greater than 1

Tools - Jan 26, 2017

Static mesh LODs other than LOD0 cannot be set to screen sizes greater than 1 From this AnswerHub thread: https://answers.unrealengine.com/questions/525398/hismc-bug-always-show-lowest-lod.html ...

[CrashReport] Assertion failure in NameTypes.h after CookOnTheFly

UE - Foundation - Core - Apr 25, 2017

This is a top crash occurring for users in the 4.14 and 4.15 releases. Unfortunately no user-descriptions of the issue have been provided, so information is limited. Despite a different callstack, ...

High Quality Gaussian DoF on Mobile is broken

UE - Platform - Mobile - Apr 11, 2018

UDN issue:  4.19 High Quality Gaussian DoF on Mobile效果出错? Another answer hub report: https://answers.unrealengine.com/questions/757162/dof-bug-on-mobile-with-419p4.html ...

Investigate if we can avoid re-sending properties using COND_InitialOnly when being woken from dormancy

UE - Networking - Oct 24, 2018

Investigate if we can avoid re-sending properties using COND_InitialOnly when being woken from dormancy. See: https://udn.unrealengine.com/questions/463660/dormant-actors-replicate-properties-set-t ...